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131029807040 = 2651171524287
BaseRepresentation
bin111101000000111111…
…1000010111111000000
3110112012200200212022022
41322001333002333000
54121322112311130
6140105543301012
712316016661146
oct1720177027700
9415180625268
10131029807040
1150629a01430
122148974a768
13c482349c02
1464b0175596
15361d4817e5
hex1e81fc2fc0

131029807040 has 112 divisors (see below), whose sum is σ = 345174441984. Its totient is φ = 46976025600.

The previous prime is 131029807037. The next prime is 131029807067. The reversal of 131029807040 is 40708920131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12224 + ... + 512063.

Almost surely, 2131029807040 is an apocalyptic number.

131029807040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131029807040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172587220992).

131029807040 is an abundant number, since it is smaller than the sum of its proper divisors (214144634944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131029807040 is a wasteful number, since it uses less digits than its factorization.

131029807040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524386 (or 524376 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 131029807040 in words is "one hundred thirty-one billion, twenty-nine million, eight hundred seven thousand, forty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 64 71 80 88 110 142 160 176 220 284 320 352 355 440 568 704 710 781 880 1136 1420 1562 1760 2272 2840 3124 3520 3905 4544 5680 6248 7810 11360 12496 15620 22720 24992 31240 49984 62480 124960 249920 524287 1048574 2097148 2621435 4194296 5242870 5767157 8388592 10485740 11534314 16777184 20971480 23068628 28835785 33554368 37224377 41942960 46137256 57671570 74448754 83885920 92274512 115343140 148897508 167771840 184549024 186121885 230686280 297795016 369098048 372243770 409468147 461372560 595590032 744487540 818936294 922745120 1191180064 1488975080 1637872588 1845490240 2047340735 2382360128 2977950160 3275745176 4094681470 5955900320 6551490352 8189362940 11911800640 13102980704 16378725880 26205961408 32757451760 65514903520 131029807040